# SDR 2003FA0001016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2003
- Submitted: October 8, 2003
- Operation: General aviation
- Aircraft: [N864AF](https://openairdocs.org/aircraft/N864AF), registered now
- Make and model: Grob G 120A
- Registry model: [Grob G 120A](https://openairdocs.org/model/grob-werke-g-120a) (OpenAirDocs)
- Aircraft serial: 85004
- Engine: Lyc AEIO540D4D5
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Motor
- Condition: Failed
- Location: Hyd Pump Unit
- Part time: 591 hours
- Component: Pump Unit
- Component part number: X030001B
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2003FA0001016

## Discrepancy

DURING FLIGHT TRAINING, GEAR FAILED TO RETRACT.  MAINTENANCE TECHNICIAN FOUND THAT THE HYDRAULIC PUMP MOTOR OF THE RETRACT SYSTEM HAD FAILED.  PROBABLE CAUSE IS OVERHEATING OF THE HYDRAULIC PUMP MOTOR.  RECOMMENDATION IS TO MANUFACTURE TO INSTALL A HIGHER CAPACITY MOTOR TO OPERATE THE LANDING GEAR SYSTEM.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.